Improvement in wrenches



3.1. WELLES.

W' re nch.

Patented Sept. 14, 1875.

Jay f WITNESSES ATTORNEYS.

MFETERS, PHO O-LITDjQGRA HEN. WASHINGTON, D c.

UNITED STATES PATENT QFFICE.

RICHARD J. WELLES, OF ST. JOSEPH, MISSOURI.

IMPROVEMENT IN WRENCHES.

- Specification forming part of Letters Patent Ii 0. 167,717, dated September 14, 1875 application filed May 28, 1875.

To all whom it may concern:

Be it known that I, RICHARD J. WELLES, of St. Joseph, Buchanan county, Missouri, have invented a new and useful Improvement in Monkey-Wrenches, of which the following is I a specification:

The invention will first be described in con-' nection with drawing, and then pointed out in the claim.

Figure 1 is a sectional side view of the wrench, thesection being taken on the line as a: of Fig. 2, looking toward the handle; and Fig. 2 is a cross-section of Fig, 1, taken on the line y y.

Similar letters of reference'indioate corresponding parts.

A is the bar of the wrench. B is the stationary jaw. O is the movable jaw, which is connected with the slide D by the brace-bar E. F is a nut, with which the slide D is connected by means of the semicircular collar Gr and a groove in the nut F. This arrangement allows the nut to turn to adjust the'sliding jaw. A screw-thread is cut in the bar A, as seen in the drawing. Hrepresents the handle is the power to resist strain.

of the wrench, through which a thread is cut, so that the handle screws on and serves as a jam-nut for the nut F, and effectually resists the strain upon that nut. l is the end of the wrench-bar, which is tapered down to serve as a screw-driver.

The handle may be made all metal, or with No part is likely to fail 

